<template>
  <div id="app">
    <a-input placeholder="请输入任务" class="my_ipt" :value="inputValue" @change="handleInputChange"></a-input>
    <a-button type="primary" @click="addItemToList">添加事项</a-button>

    <a-list bordered :dataSource="infoList" class="dt_list">
      <a-list-item slot="renderItem" slot-scope="item">
        <a-checkbox :checked="item.done" @change="(e) => {cbStatusChange(e,item.id)}">{{item.info}}</a-checkbox>
        <a slot="actions" @click="removeItemById(item.id)">删除</a>
      </a-list-item>

      <div slot="footer" class="footer">
        <span>{{unDoneLength}}条剩余</span>
        <a-button-group>
          <a-button :type="viewKey === 'all' ? 'primary' : 'default'" @click="changeList('all')">全部</a-button>
          <a-button :type="viewKey === 'undone' ? 'primary' : 'default'" @click="changeList('undone')">未完成</a-button>
          <a-button :type="viewKey === 'done' ? 'primary' : 'default'" @click="changeList('done')">已完成</a-button>
        </a-button-group>
        <a @click="clean">清除已完成</a>
      </div>
    </a-list>
  </div>
</template>

<script>
import {mapState, mapGetters} from 'vuex'
export default {
  name: 'app',
  data() {
    return {}
  },
  created() {
    this.$store.dispatch('getList')
  },
  computed: {
    ...mapState(['inputValue', 'viewKey']),
    ...mapGetters(['unDoneLength','infoList']),
  },
  methods: {
    // 监听文本框变化
    handleInputChange(e){
      // console.log(e.target.value);
      this.$store.commit('setInputValue',e.target.value)
    },
    // 向列表中添加新item项
    addItemToList(){
      if(this.inputValue.trim().length <= 0){
        return this.$message.warning('文本框内容不能为空！')
      }

      this.$store.commit('addItem')
    },
    // 删除列表中的任务
    removeItemById(id){
      this.$store.commit('removeItem', id)
    },
    // 监听复选框选中状态变化
    cbStatusChange(e,id){
      // e.target.checked当前复选框的选中状态
      // console.log(e.target.checked);
      // console.log(id);
      const param = {
        id: id,
        status: e.target.checked
      }
      this.$store.commit('changeStatus',param)
    },
    // 清除已经完成的任务
    clean(){
      this.$store.commit('cleanDone')
    },
    // 修改页面上显示的列表数据
    changeList(key){
      this.$store.commit('changeViewKey',key)
    }
  }
  
}
</script>

<style lang="less" scoped>
#app{
  padding: 10px;
}

.my_ipt{
  width: 500px;
  margin-right: 10px;
}

.dt_list{
  width: 500px;
  margin-top: 10px;
}

.footer{
  display: flex;
  justify-content: space-between;
  align-content: center;
}
  
</style>